According to David Palmer's 2006 book, Parent's Guide to IQ Testing and Gifted Education, the average score for customary intelligence tests is 100 with a standard deviation of 15; approximately 50% of the population will score between 90 and 109 on a modern IQ test.
How long the decomposition of compostable plates takes is a question that many people might ask, and several factors influence what the answer is. Generally, if a compostable plate is placed in a commercial compost facility, it will take less than 180 days to completely decompose.
Confidence votes 32. It takes 70-450 years to decompose. And if you buy biodegradable platic it only takes 75-180 days. Wow, that is a BIG difference and that is fantastic that people actually look at this and they think about it and then they say Save The Ozone Layer!.